WHAT MAKES IT DIFFERENT FROM TRADITIONAL UNO: Adds a fifth color (purple) and has a different ratio of cards than traditional Uno. Cards are only from 1 to 7 instead of 0 to 9. The game includes rules for a special card, the 'On-Tour' Card. This card when played allows the player to trade cards with another player. The 6 special 'On-Tour' cards are only available in the 3 *NSYNC #1 Fan Dolls Barbie, Teresa, and Christie. The game is package in a double CD case and comes with an exclusive *NSYNC CD. - BoardGameGeek